1. A garment worn by men, covering the hips and thighs; smallclothes. His jacket was red, and his breeches were blue. Coleridge. 2. Trousers; pantaloons. [Colloq.] Breeches buoy, in the life-saving service, a pair of canvas breeches depending from an annular or beltlike life buoy which is usually of cork. This contrivance, inclosing the person to be rescued, is hung by short rope...